51551496 has 48 divisors (see below), whose sum is σ = 142874160. Its totient is φ = 16783200.

The previous prime is 51551449. The next prime is 51551501. The reversal of 51551496 is 69415515.

51551496 is a `hidden beast` number, since 51 + 5 + 514 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51551496.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5230 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (2976545).

Almost surely, 2^51551496 is an apocalyptic number.

It is an amenable number.

51551496 is an abundant number, since it is smaller than the sum of its proper divisors (91322664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51551496 is a wasteful number, since it uses less digits than its factorization.

51551496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16706 (or 16699 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 51551496 is about 7179.9370470778. The cubic root of 51551496 is about 372.1749090758.

The spelling of 51551496 in words is "fifty-one million, five hundred fifty-one thousand, four hundred ninety-six".